can you use these people's organs? >> this man made a life or death decision, taking his ultimate fate into his own hands. in 1993, he learned he was suffering from multiple sclerosis. he realized his life would probably end slowly and in pain, and his dependence on others would grow as the disease progress. >> my personal limit is when my health problems prevent me from having a social life. that is when it will become unbearable for me. >> mario decided to end his life using euthanasia, campaigning to make assisted suicide legal in his native belgium. in such a of a 2002, his wish was granted. he received a lethal injection from his doctor, becoming the first person to use belgium's new euthanasia law. a decade later, his doctor is still convinced that assisted suicide is a positive thing. >> people have become much more vocal. now they can clearly and easily express what they really want. the legislation has insured that patients more frequently say how long they want to be treated for and also how they want to die.